1 files changed, 42 insertions, 0 deletions

diff --git a/libcxx/test/input.output/iostreams.base/ios.base/ios.base.storage/iword.pass.cpp b/libcxx/test/input.output/iostreams.base/ios.base/ios.base.storage/iword.pass.cpp
new file mode 100644
index 00000000000..e700c5aeba1
--- /dev/null
+++ b/libcxx/test/input.output/iostreams.base/ios.base/ios.base.storage/iword.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// long& iword(int idx);
+
+#include <ios>
+#include <string>
+#include <cassert>
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main()
+{
+    test t;
+    std::ios_base& b = t;
+    for (int i = 0; i < 10000; ++i)
+    {
+        assert(b.iword(i) == 0);
+        b.iword(i) = i;
+        assert(b.iword(i) == i);
+        for (int j = 0; j <= i; ++j)
+            assert(b.iword(j) == j);
+    }
+}